📺Trending Channel Casts (Channel Feeds)

Learn how to use Airstack to build Farcaster Channel Feeds sorted by engagement

Trending Casts In A Channel Tutorial

Criteria

Airstack provides multiple ways to fetch Trending Casts of a specific channel:

Name	Value	Description
criteria	social_capital_value | likes | recasts | replies | likes_recasts_replies |	This will calculate and sort the Farcaster casts based on the chosen criteria: - social_capital_value(Recommended): the social capital value associated with the cast - likes: number of likes on the cast - recasts: number of recasts on the cast - replies: number of replies on the cast - likes_recasts_replies: number of total likes, recasts, and replies on the cast combined
channelUrl	String	Specify the channel URL where you want to fetch the trending cast. If you don't know the channel's URL, then find the channel's URL with this query here. The url field will return you the channel's URL associated with the given channel ID.
timeFrame	one_hour | two_hours | four_hours | eight_hours | twelve_hours | one_day | two_days | seven_days	Only fetch trending casts that have the most engagement within the chosen time frame, e.g. one_hour will fetch trending Farcaster casts with the most engagement for the last 1 hour.

Social Capital Value & Social Capital Scores

A new metric, Social Capital Value (SCV), has been introduced to identify high-quality trending broadcasts. SCV incorporates the authority of users, measured by another metric, Social Capital Scores (SCS), who engage with the broadcast based on on-chain data.

For additional information on SCV and SCS, please refer to the following section here.

Pre-requisites

• An Airstack account

• Basic knowledge of GraphQL

Get Started

JavaScript/TypeScript/Python

If you are using JavaScript/TypeScript or Python, Install the Airstack SDK:

npm

React

npm install @airstack/airstack-react

Node

npm install @airstack/node

yarn

React

yarn add @airstack/airstack-react

Node

yarn add @airstack/node

pnpm

React

pnpm install @airstack/airstack-react

Node

pnpm install @airstack/node

pip

pip install airstack

Then, add the following snippets to your code:

React

import { init, useQuery } from "@airstack/airstack-react";

init("YOUR_AIRSTACK_API_KEY");

const query = `YOUR_QUERY`; // Replace with GraphQL Query

const Component = () => {
  const { data, loading, error } = useQuery(query);

  if (data) {
    return <p>Data: {JSON.stringify(data)}</p>;
  }

  if (loading) {
    return <p>Loading...</p>;
  }

  if (error) {
    return <p>Error: {error.message}</p>;
  }
};

Node

import { init, fetchQuery } from "@airstack/node";

init("YOUR_AIRSTACK_API_KEY");

const query = `YOUR_QUERY`; // Replace with GraphQL Query

const { data, error } = await fetchQuery(query);

console.log("data:", data);
console.log("error:", error);

Python

import asyncio
from airstack.execute_query import AirstackClient

api_client = AirstackClient(api_key="YOUR_AIRSTACK_API_KEY")

query = """YOUR_QUERY""" # Replace with GraphQL Query

async def main():
    execute_query_client = api_client.create_execute_query_object(
        query=query)

    query_response = await execute_query_client.execute_query()
    print(query_response.data)

asyncio.run(main())

Other Programming Languages

To access the Airstack APIs in other languages, you can use https://api.airstack.xyz/gql as your GraphQL endpoint.

Fetch Trending Casts Of Certain Farcaster Channel

Once you have the criteria, channelUrl, and timeFrame parameters prepared, simply use the query below and add the parameters as variables:

If you don't know the channel's URL, then find the channel's URL with this query here. The url field will return you the channel's URL associated with the given channel ID.

Try Demo

https://app.airstack.xyz/query/o348V6bEyW

Show all trending Farcaster casts in /airstack channel in the last 1 hour sorted by social capital value

Code

Query

query MyQuery(
  $criteria: TrendingCastsCriteria!
  $timeFrame: TrendingCastTimeFrame!
  $channelUrl: String!
) {
  TrendingCasts(
    input: {
      blockchain: ALL
      criteria: $criteria
      timeFrame: $timeFrame
      filter: { rootParentUrl: { _eq: $channelUrl } }
    }
  ) {
    TrendingCast {
      criteria
      criteriaCount
      hash
      id
      castValueFormatted
      castValueRaw
      timeFrom
      timeTo
      cast {
        text
        mentions {
          fid
          position
        }
        embeds
        url
      }
    }
  }
}

Variables

{
  "timeFrame": "one_hour",
  "criteria": "social_capital_value",
  "channelUrl": "https://warpcast.com/~/channel/airstack" // /airstack channel URL
}

Response

{
  "data": {
    "TrendingCasts": {
      "TrendingCast": [
        {
          "criteria": "social_capital_value",
          "criteriaCount": 3.662080821405,
          "hash": "0x0a57a54058eacf39b72f89a4f8fa3452cfd7b792",
          "id": "0x0a57a54058eacf39b72f89a4f8fa3452cfd7b792",
          "castValueFormatted": 3.662080821405,
          "castValueRaw": "366208082138",
          "timeFrom": "2024-05-15T13:50:00Z",
          "timeTo": "2024-05-15T14:10:00Z",
          "cast": {
            "text": "Airstack is building a ton of tools for channels hosts and users right now \n\nUser facing tools/products not just APIs\n\nWe believe there’s a lot we can uniquely contribute in this area and we hope to make a helpful impact",
            "mentions": [],
            "embeds": [],
            "url": "https://warpcast.com/betashop.eth/0x0a57a540"
          }
        }
        // Other trending Farcaster casts on /airstack channel
      ]
    }
  }
}

🎉 🥳 Congratulations you've just fetched all the trending Farcaster casts of a certain Farcaster channel and integrate it into your application!

Developer Support

If you have any questions or need help regarding integrating or building trending casts of a certain channel into your application, please join our Airstack's Telegram group.

More Resources

• TrendingCasts API Reference

• FarcasterCasts API Reference